Fountain-pen



(Ne Medel.) Y

P. E; WIRT.

FOUNTAIN PEN.

Patented Sept. 25, 1894.

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y. .IUNTTED STATES PATENT OFFICE.

PAUL E. wier, on BLooMsBURe, PENNSYLVANIA.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 526,427, datedSeptember 25, 1894:.`

Application tiled December 4, 1893. Serial No. 492,767. (No model.) r

To all whom t may concern:

Be it known that I, PAUL E. WIRT, of Bloomsburg, county of Columbia, andState of Pennsylvania, have invented a new and useful Improvement inFountain-Pens, of which the following is a specification.

My invention relates to fountain pens, and has reference moreparticularly to that typeof pens described and claimed in an applicationfiled by me on the 26th day of August, 1893, Serial No. 484,106, and inan application of even date herewith, `Serial No. 492,766. The pensdescribed in these applications comprise a reservoir in the form of atube and amo vable pen and conductor shaft, the construction of theparts being such that when not in use the pen point is contained withinthe reservoir and kept moist by the surrounding ink, so that when it isprojected beyond the reservoir for use, the ink will instantly flow tothe moist point and permit writing without delay.

The presentinvention relates to certain improvements in pens of thecharacter described and has reference more particularly to the mechanismfor projecting the p'en from the reservoir, to the form of the cap forclos`- ing the ends of the same, and to other details as will be morefully described hereinafter and claimed.

In the accompanying drawings, Figure `l, is

a longitudinal centralsection partly in elevation througha fountain penhaving my invention embodied therein, the pen point be'- ing in theposition it `will occupy when not in use within the reservoir. Fig. 2,is a similar View with the pen point projected beyond the reservoirready for use.V Fig. 3, is a perspective sectional view of myimprovedcap. Fig. 4, is a modification of the same.

Referring to the drawings, A represents a tube of hard rubber or anyother appropriate material constituting the reservoir for the ink, whichis open at its forward end where its internal diameter is reduced asshown.

B represents a plug or stopper containing a longitudinal opening inwhich a pen C and an overlying conductor shaft D are fixed, the latterserving to lead the ink through the opening in the plug to the pen. Theplug is of a size externally to fit within the reduced end ofthereservoir and close the same, and when in this position the pen will beprojected beyond the reservoir ready for use, as yshown in Fig. 2. Whennot in use the pen, conductor shaft and plug are pushed bodily backwardwithin the reservoir, until they are in the positions shown in Fig. l,the ink surrounding the point ot' the pen and keeping the same moist,andthe reservoirbeing closed by a cap E, more fully describedhereinafter.

In order that when the pen is to be used it may be projected forwardfrom the reservoir to the position shown in Fig. 2, I provide thereservoir near its rear end with a partition F which has formed thereinan opening in which is fixed a tube f extending longitudinally of thereservoir. Within this tube a rod G is mounted to slide back and forth,and is of such size that it will fit snugly therein and prevent thepassage of ink between its outer surface and the inner surface of thetube. This rod is provided at opposite ends with heads g, g,and at theinner sides of the head,

the rod is provided with two Stoppers h, h', adapted to abut alternatelyagainst the ends of the tube f, as the rod is moved back and forth, andto effectually seal the same to prevent the passage of any ink. thatmight lescape around the outer surface of the rod. A

spiral spring I encircles the rear end of the :tube and bears at itsopposite ends against the partition F, and the head g on the rod,

and tends normally to force the rod rearward with its stopper h,against, the inner end of the tube.

reservoir is adapted to abut against the rear end of the conductorshaft, so that when the rod is pushed forward, the conductor shaft willbe pushed before it, and the plug B forced within the reduced end of thereservoir with the pen point -projected beyond the same ready for use,the stopper hon the rod abutting at the same time against the rear endof the tube f, and tightly closing the same, as shown in Fig. 2.

In the accompanying drawings I have represented the conductor shaft andconnected parts as free and disconnected from `the projecting mechanism,and this inorder that the said parts may be removed bodily from .thereservoir when the latter is to be filled, or for any other reason, butit will be readily understood that the conductor shaft may be con Thehead g carried by the rod within the f Ioo nected at its rear end,without affecting the operation of the parts, as pointed out,exceptthat in the latter case the spiral spring would act to withdraw the penand the conductor within the reservoir while under the constructionfirst described, it will be necessary to force them rearward from thefront.

In order that the pen may be conveniently projected forward for use bythe mechanism described, I form the cap E before referred to on itsinterior with a central finger e, and provide the interior of the capwith threads adaptedzto engage external threads a at the rear end of thereservoir, the arrangement being such that as the cap is screwed on tothe reservoir, the end of the finger will abut against the exposed headg on the sliding rod,

and will force the latter forward against the tension of the spring,thereby pushing the conductor shaft forward until the plug is seated inthe end of the reservoir with the pen projected for use. On the removalof the cap from the rear end of the reservoir, the spring in resumingits forward expanded position, will draw the sliding rod rearward, andthe cap being applied to the front of the reservoir, the end of thefinger will abut against the front of the plug B, adjacent to the pen,and will force the same rearward within' the reservoir, as shown in Fig.1.

I propose in certain cases, to insure the contact of the end of thefinger with the end of the plug, to provide the former with a head orenlargement e', as shown in Fig. 4.

In order that when the penis not in use the open end of the reservoirmay be eectually sealed, I provide the cap on its interior with a solidraised surface e2, which is separated from the interior of the cap,which raised surface is adapted when the cap is in place to abut againstthe end of the reservoir and close the same,and I form on this raisedsurface a permanent convex projection e3, adapted to extend into the endof the reservoir when the cap is in place, as shown in Fig. 1. It hasbeen found that this convex projection will in connection with the solidflat surface effectually seal the end of the reservoir, so that there islittle or no liability of leakage therefrom.

From the above description it will be seen that the cap is of suchconstruction that two sealing surfaces are formed, one between the endof the reservoir and the solid surface e2, and the other between theexterior of the permanent raised surface and the interior of thereservoir, so that there will be no liability of any ink escaping fromthe reservoir when the cap is in place.

Having thus described my invention, what I claim is- 1. In a fountainpen the combination with the reservoir open at its front end, themovable pen adapted when not in use to be located within the reservoir,the opening at the rear of the reservoir, the rod for projecting the penforward mounted to slide back and forth in said opening, and meanscarried by the rod for alternately closing the ends of the opening.

2. In a lfountain pen the combination of the reservoir open at its frontend, the movable pen adapted when not in use to be located within thereservoir, the opening at the rear end of the reservoir, the rod forprojecting the pen forward mounted to slide back and forth in saidopening, and provided with means for alternately closing the end of thesame, and the spring acting on said rod.

3. In a fountain pen the combination of the reservoir open at its frontend, the movable pen, the conductor shaft connected thereto, the tubeextending from within the reservoir to its outside, the rod adapted toengage the conductor, and mounted to slide back and forth in said tube,the Stoppers on the rod in position to abut against the ends of the tubeas the rod is moved to and fro, and the spring acting on said rod andtending to retract the same.

4. The combination with a reservoir open at' its front end, of a movablepen adapted when not in use to be located within the same, a plugcarrying said pen and adapted to fit within the end of the reservoirwhen the pen is projected for use and a cap provided with a finger orprojection to engage the plug.

5. The combination with a reservoir open at its front end, of a pen, aconductor shaft and a plug connecting said parts and adapted to fitwithin the end of the reservoir, a cap to close the end of the reservoirand provided with a 'finger to engage the end of the plug.

6. The combination with a reservoir open at its front end, of a pen, aconductor, and a plug connecting the pen and conductor, and adapted tofit within the end of the reservoir and a cap provided with a fingerhaving on its end a head adapted to engage the end of the plug.

7. In a fountain pen the combination of a reservoir open at its frontend, a movable pen adapted when not in use to be located within thereservoir and to be projected forward for use, a conductor connected tothe same, and a movable rod for projecting the pen, said rod having oneend arranged within the reservoir in position to engage the conductorand its opposite end exposed.

In testimony whereof I hereunto set my hand, this 27th day of October,1893, in the presence of two attesting witnesses.

PAULy E. VIRT.

Witnesses:

C. W. FUNsToN, W. E. SHAFFER.

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